Marvel Evaporator Icing / Poor Defrost

Ice maker frequently freezes up with heavy frost or ice around the evaporator and fan.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Door not sealing, frequent door openings, failed defrost heater or thermostat (if equipped), restricted airflow, thermistor misreading

Steps:

Inspect the door gasket for gaps or tears and replace if necessary.
Ensure the unit is not being opened excessively or left ajar.
Manually defrost the unit by turning it off, removing ice and panels as needed, and allowing all frost to melt. Use towels to catch water; do not use sharp tools.
After defrosting, test the defrost heater and thermostat (if present) for continuity and replace any failed components.
Check that the evaporator fan runs properly and that air passages are not blocked.

Medium 3/5

Door Gasket / Defrost Heater / Defrost Thermostat

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